Bio cell division

If a newt has a diploid number of 24 chromosomes, how many chromosomes are in a typical newt skin cell?

24

In the menstrual cycle, what defines Day 1 of the Cycle?

Menstruation

what’s the role of the spindle during mitosis

It helps separate the chromosomes

how many chromosomes are in a normal adult skin cell

46

the structure labeled a in figure 10-12 is the

centromere

what phase of meiosis is this

prophase 1

The stage of the cell cycle where DNA replication occurs is

S.

The following picture shows how a newt can regenerate an entire limb that is accidentally cut off. This process is probably

carried out by

Meiosis

When during the cell cycle is a cell’s DNA replicated?

S phase

Which pair is correct?

G2 phase, preparation for mitosis

Which situation(s) would require mitosis?

Healing a cut on the hand

Match the hormone with its function.

• How many chromosomes are in the body cells of an organism that has a haploid number of 8?

16

In Figure 10–2 the letter “B” is pointing to sister chromatids. True or False?

True

One of the main differences between male and female production of gametes is that...

Cytokines is not the same

The process by which a cell divides into two daughter cells is called ______.

cell division

Cancer is a disorder in which some of the body’s cells lose the ability to control growth and division. True or False?

True

The two main stages of simple cell division of body (somatic) cells are...

cytokinesis and mitosis

In the Menstrual Cycle, what happens in or around Day 14 in a typical 28 day cycle?

ovulation

If a pregnancy occurs, the blastula will produce HCG. What is the role of this hormone as it relates to pregnancy?

Maintains corpus luteum and endometrium so menstruation DOES NOT occur

Right now, you the student, are incredibly fertile. True or False?

TRUE

Cancer cells form masses of cells called ______.

Tumors

Based on this karyotype, you know this person is...

female, normal

Which of the following numbers is pointing at the CENTROMERE?

2

Hormone replacement therapy may help men and women in their later years. True or False?

True

The phase of mitosis that is characterized by the arrangement of all chromosomes along the equator of the cell is called ______.

metaphase

The difference between anaphase of mitosis and anaphase I of meiosis is that...

chromatids do not seperate at the centromere in anaphase 1

Having a child after 35 is considered a geriatric pregnancy and carries some additional risks. True or False?

True

A typical human cell contains 46 chromosomes. After mitosis and cell division, each of the two new cells formed from the original cell...

gets a complete set of 46 chromosomes

Smoking weed, vaping, snorting cocaine, and drinking heavily will have absolutely no effect on reproductive cells. True or False?

False

Match the phases of mitosis with the description of what happens in each phase.

When a sperm and an egg unite, this forms a zygote. True or False?

True

During the cell cycle, when are chromosomes visible?

only during cell division

When men produce sperm, meiosis will be different for males because...

The cytoplasm is divided so each round of meiosis produces 4 sperm and 0 polar bodies

A diploid cell is one that...

all of the above

Progesterone is referred to as ______ because it ______.

pregnancy hormone-keeps the endometrium of the uterus

The goal of mitosis is for cells to have exactly the same genetic information as the original cell. True or False?

True

A student can study a karyotype to learn about the ______.

chromosomes present in a somatic cell

At time zero there is one cell. If the cell cycle lasts for 24 hours, how many cells will be present after 48 hour

4

• Factors that can affect the timing of the menstrual cycle include: (check all that apply)
  

stress, nutrition, physical activity

Diploid is to somatic cell as haploid is to ______.

gamete

Testosterone is an important hormone in males because... (check all that apply)

deepens the voice of the male to sound lower, causes sperm production in testicles

Which phase would be considered METAPHASE?

B

What happened here was called...

Crossing Over

WHICH PHASE OF MITOSIS IS THIS?

Telophase

Which of the following contributes to variety? (choose all that apply)

Millions of different sperm, two different biological parents, 1 egg developing from 4 possible gametes in oogenesis, crossing over

Which of these cells is in ANAPHASE?

5

In order to fit within a cell, DNA becomes more compact by...

wrapping tightly around associated proteins

Based on the above karyotype, you are looking at a...

male with Down syndrome

If the cell cycle violates the checkpoints meant to stop the formation of bad cells, this can lead to a serious medical condition called...

cancer

What is happening during the G1 and G2 phases?

cells are growing and getting bigger

Drugs and alcohol have no impact on human fertility in men and women. True or False?

False

How many chromosomes are in a normal human egg cell?

23

The goal of MEIOSIS is to make the cells the same. True or False?

false

Separation of homologous chromosomes occurs during ______.

meiosis 1